Implement Tox Client Standard concerning the avatars

[ovalseven8]

2.3.5 Clients must display avatars at a 1:1 aspect ratio.

Not relevant for Toxic at the moment because the display of avatars is not supported yet.

2.3.6 A client may only transmit avatars with an aspect ratio of 1:1. If the user has chosen a non-square avatar, the client must transmit the square portion of the avatar displayed to the user. In the case that the user's client doesn't display avatars, the client must pad the avatar evenly on two sides with transparent rectangles, in order to create a square.

That's relevant for Toxic. What's possible as well is that users are only able to set a square avatar. So, you wouldn't need to pad avatars.

[xeruf]

Well, let's pick this back up and check compatibility since toxic supports avatars now.

Unfortunately, the feature does not work for me - I tried to set tox.avatar_path="/Path/to/gendry.png" with the following PNG, which is far from the size limit: But get

Failed to set avatar. Avatars must be in PNG format and may not exceed 65536 bytes.

Okay, figured it out while typing - I forgot a / at the beginning of the path. Would be nice if the error message would be different for an invalid file path.

[JFreegman]

This has been implemented